DirectX animation warning when running inside visual studio

[Z.K.]

I was wondering if someone could tell me why I get this message and how
to prevent it. If I hit continue, it runs fine, but want to know what I
am doing wrong so I won't get this error in the future. also what is
the file Clock.vshost.exe; my application is Clock.exe.

Z.K.
'Clock.vshost.exe' (Managed): Loaded 'C:\Documents and
Settings\Super_Wizard\My Documents\Visual Studio
2005\Projects\Clock\bin\Release\Clock.exe', Symbols loaded.
Managed Debugging Assistant 'LoaderLock' has detected a problem in
'C:\Documents and Settings\sssssss\My Documents\Visual Studio
2005\Projects\Clock\bin\Release\Clock.vshost.exe'.
Additional Information: DLL
'C:\WINDOWS\assembly\GAC\Microsoft.DirectX\1.0.290 2.0__31bf3856ad364e35\Microsoft.DirectX.dll'
is attempting managed execution inside OS Loader lock. Do not attempt to
run managed code inside a DllMain or image initialization function since
doing so can cause the application to hang.


Here is the code:

private void EnableBtn_Click(object sender, EventArgs e)
{
//create the video object
Microsoft.DirectX.AudioVideoPlayback.Video video;

//load alarm avi file
video = new
microsoft.DirectX.AudioVideoPlayback.Video("C:\\Do cuments and
Settings\\Super_Wizard\\My Documents\\Visual Studio
2005\\Projects\\Clock\\bin\\Debug\\bell_t.avi");

//set the System.Windows.Forms.Control to play it in (e.g a
panel)
video.Owner = alarmAnimatePanel;

//Play the video (put this in a buttons click event)
video.Play();

}

[Peter Duniho]

On Sun, 24 Aug 2008 16:51:07 -0700, Z.K. <no****@nospam.netwrote:

I was wondering if someone could tell me why I get this message and how
to prevent it. If I hit continue, it runs fine, but want to know what I
am doing wrong so I won't get this error in the future. also what is
the file Clock.vshost.exe; my application is Clock.exe.

When you run in the debugger, VS actually hosts your real program in a
sort of wrapper .exe.

As far as the exception goes, if you Google for the exception and DirectX,
you'll see that others have had the same issue (including myself). As far
as I can tell, it's a benign error. Probably a bug in the DirectX/managed
wrapper but I haven't had it cause any trouble and saw at least one person
who heard from the actual DirectX team that it's not a problem.

Note that the exception is actually a "Managed Debugging Assistant" thing,
so you'll only ever see it when you run the program in the debugger. I
just wound up turning the LoaderLock MDA off under the Debug settings for
Visual Studio. I figure that if I ever violate the LoaderLock MDA rules
in a situation when it matters, I'll know soon enough because my program
will deadlock. :)

Pete

[Z.K.]

Peter Duniho wrote:

On Sun, 24 Aug 2008 16:51:07 -0700, Z.K. <no****@nospam.netwrote:

>I was wondering if someone could tell me why I get this message and
how to prevent it. If I hit continue, it runs fine, but want to know
what I am doing wrong so I won't get this error in the future. also
what is the file Clock.vshost.exe; my application is Clock.exe.

When you run in the debugger, VS actually hosts your real program in a
sort of wrapper .exe.

As far as the exception goes, if you Google for the exception and
DirectX, you'll see that others have had the same issue (including
myself). As far as I can tell, it's a benign error. Probably a bug in
the DirectX/managed wrapper but I haven't had it cause any trouble and
saw at least one person who heard from the actual DirectX team that it's
not a problem.

Note that the exception is actually a "Managed Debugging Assistant"
thing, so you'll only ever see it when you run the program in the
debugger. I just wound up turning the LoaderLock MDA off under the
Debug settings for Visual Studio. I figure that if I ever violate the
LoaderLock MDA rules in a situation when it matters, I'll know soon
enough because my program will deadlock. :)

Pete

That's good to know.

Thanks,

Z.K.